Discuss the importance and limitations of Statistics.
[5 marks]Find Q1, Q3, D8 & P65 for the following data. 9,23,20,18,22,12,11,15,2
[5 marks]Write a note on types of variables.
[5 marks]Find mean, median and mode for the following data. 20,14,20,27,20,8,9,16,8,11,9
[5 marks]Draw Frequency Polygon for the following frequency distribution. Class 0-5 5-10 10-15 15-20 20-25 25-30 30-35 Fi 6 11 18 23 17 12 9
[5 marks]What is average? Give it’s uses and characteristics.
[5 marks]Find standard deviation, variance and CV for the data : 6, 15, 16, 7, 17, 23, 10, 22.
[5 marks]Discuss range, quartile deviation, standard deviation.
[5 marks]Calculate mean, median and mode for the following frequency distribution. Class 10-15 15-20 20-25 25-30 30-35 35-40 Fi 6 11 17 10 8
[3 marks]Define correlation coefficient and write down its properties.
[5 marks]Find Spearman’s rank correlation coefficient. X 6 7 15 16 11 14 9 Y 9 10 18 17 12 20
[8 marks]Write a note on Scatter diagram method.
[5 marks]Find equation of regression line for the data given below. X 22 18 20 10 15 Y 20 15 16 14 18 18
[14 marks]Discuss Stratified random sampling method in detail.
[5 marks]Find trends by 3 yearly moving averages. Year 2008 2010 2012 2014 2016 2018 2020 2022 Sales 34 25 27 40 45 54 50 47
[5 marks]Write a short note on components of time series.
[5 marks]What is sampling? Discuss its advantages.
[5 marks]